Well, the 346 is being/has been built on the same line as the 330, so officially the production line is still open, but the last 346 has been built last year and there is no order backlog at the moment.

In relation to the report that LX won't replace the 343 before 2020, and in addition to what I said earlier (that it is unlikely that LX is evaluating to replace the 343s by used 346s from 2020 onwards), I think it is equally unlikely that LX will order new 346s for delivery starting from 2020. The journalist probably has indeed penned down some aircraft models, incl the 346. However, for some time there have been these rumours/gossip that LX will add some 346s in the near future. It probably won't be more than that: rumours & gossip, but you never know...